diff --git a/packages/playwright-core/src/server/trace/viewer/traceViewer.ts b/packages/playwright-core/src/server/trace/viewer/traceViewer.ts
index b6724ee9a1..67bbf264ae 100644
--- a/packages/playwright-core/src/server/trace/viewer/traceViewer.ts
+++ b/packages/playwright-core/src/server/trace/viewer/traceViewer.ts
@@ -99,7 +99,7 @@ export async function showTraceViewer(traceUrls: string[], browserName: string,
   await context.extendInjectedScript(consoleApiSource.source);
   const [page] = context.pages();
 
-  if (isUnderTest())
+  if (process.env.PWTEST_PRINT_WS_ENDPOINT)
     process.stderr.write('DevTools listening on: ' + context._browser.options.wsEndpoint + '\n');
 
   if (traceViewerBrowser === 'chromium')
diff --git a/tests/playwright-test/ui-mode-fixtures.ts b/tests/playwright-test/ui-mode-fixtures.ts
index f0d19dedb3..13cf88b6c3 100644
--- a/tests/playwright-test/ui-mode-fixtures.ts
+++ b/tests/playwright-test/ui-mode-fixtures.ts
@@ -82,6 +82,7 @@ export const test = base
               PWTEST_UNDER_TEST: '1',
               PWTEST_CACHE_DIR: cacheDir,
               PWTEST_HEADED_FOR_TEST: headless ? '0' : '1',
+              PWTEST_PRINT_WS_ENDPOINT: '1',
             },
             cwd: options.cwd ? path.resolve(baseDir, options.cwd) : baseDir,
           });